參數(shù)資料
型號(hào)： AAT1143
廠商： Advanced Analogic Technologies, Inc.
元件分類： 圓形連接器
英文描述： Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GT; No. of Contacts:4; Connector Shell Size:22; Connecting Termination:Solder; Circular Shell Style:Square Flange Receptacle; Body Style:Straight
中文描述： 1MHz的400mA的降壓轉(zhuǎn)換器
文件頁(yè)數(shù)： 8/20頁(yè)
文件大?。?/td> 594K
代理商： AAT1143
Functional Block Diagram
EN
LX
Err
A.
Logic
DH
DL
PGND
VIN
OUT
AGND
Voltage
Reference
INPUT
See note
Note: For adjustable version, the internal feedback divider is omitted and the FB pin is tied directly
to the internal error amplifier.
AAT1143
1MHz 400mA Step-Down Converter
8
1143.2005.09.1.7
Functional Description
The AAT1143 is a high performance 400mA 1MHz
monolithic step-down converter. It has been
designed with the goal of minimizing external com-
ponent size and optimizing efficiency over the com-
plete load range. Apart from the small bypass input
capacitor, only a small L-C filter is required at the
output. Typically, a 4.7μH inductor and a 4.7μF
ceramic capacitor are recommended (see table of
values).
The fixed output version requires only three external
power components (C
IN
, C
OUT
, and L). The
adjustable version can be programmed with external
feedback to any voltage, ranging from 0.6V to the
input voltage. An additional feed-forward capacitor
can also be added to the external feedback to pro-
vide improved transient response (see Figure 1).
At dropout, the converter duty cycle increases to
100% and the output voltage tracks the input volt-
age minus the R
DSON
drop of the P-channel high-
side MOSFET.
The input voltage range is 2.7V to 5.5V. The con-
verter efficiency has been optimized for all load
conditions, ranging from no load to 400mA.
The internal error amplifier and compensation pro-
vides excellent transient response, load, and line
regulation. Soft start eliminates any output voltage
overshoot when the enable or the input voltage is
applied.
相關(guān)PDF資料
PDF描述
AAT1143IJS-0.6-T1 Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GT; No. of Contacts:5; Connector Shell Size:24; Connecting Termination:Solder; Circular Shell Style:Square Flange Receptacle; Body Style:Straight
AAT1143IJS-1.2-T1 GT 24C 24#16 SKT RECP
AAT1143IJS-1.5-T1 GT 2C 2#4 SKT RECP WALL
AAT1143IJS-1.6-T1 GT 22C 18#16 4#12 SKT RECP
AAT1143IJS-1.8-T1 GT 22C 18#16 4#12 SKT RECP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AAT1143_06 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1MHz 400mA Step-Down Converter
AAT1143IJS-0.6-T1 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1MHz 400mA Step-Down Converter
AAT1143IJS-1.2-T1 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1MHz 400mA Step-Down Converter
AAT1143IJS-1.5-T1 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1MHz 400mA Step-Down Converter
AAT1143IJS-1.6-T1 功能描述:電源開(kāi)關(guān) IC - 配電 Fast Trans 600mA Step-Down Cnvrt RoHS:否 制造商:Exar 輸出端數(shù)量:1 開(kāi)啟電阻（最大值）:85 mOhms 開(kāi)啟時(shí)間（最大值）:400 us 關(guān)閉時(shí)間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5
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